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Finding the Fourth Proportional to 414,550.80, 621,756.63 and 115,061.81

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Solution

The fourth proportional to 414,550.80, 621,756.63 and 115,061.81 is: 172,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,550.80 : 621,756.63 = 115,061.81 : x
  2. Step 2: Convert to fraction form
    414,550.80/621,756.63 = 115,061.81/x
  3. Step 3: Cross multiply
    414,550.80x = 621,756.63 × 115,061.81
  4. Step 4: Simplify right side
    414,550.80x = 71,540,440,118.52
  5. Step 5: Solve for x
    x = 71,540,440,118.52/414,550.80
  6. Step 6: Final answer
    x = 172,573.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.